I suppose we have different experiences then. I havent found teaching most beginners to shoot DAO, as long as they had the strength to pull the trigger, and for the most part, thats never been an issue. Add some regular dry fire to the mix, and things only get better as muscle tone quickly gets better.
And as I always have to ask, for those of you who call a DA trigger crappy, how much do you actually shoot them that way, and if you do, why cant you shoot them well? Ive always found that when trying to shoot deliberate groups, I normally shoot tighter groups when I shoot my DA guns DAO, and that included the autos, so I really have to question what problems youre having that makes them crappy.
Or are you one who has to have a tuned, SA trigger in order to be able to shoot well? From my experience, thats usually where the complaints come from when this comes up.
If you teach someone to shoot DAO, they will be further ahead than someone who learns SA, and can much easier adapt to SA later, than those who do the reverse. And the reverse only becomes much more difficult down the road, as the caliber increases.
This is along the same lines as teaching beginners to shoot long guns from field positions than from shooting off a bench. Learn to do things right from the start, and that little extra work, pays dividends, even in the short run, and you will be way ahead in the long run.